In a C program, after performing multiple array range increment operations, print the modified array

Given an array arr[m] containing m integers and n (values ​​to be added to the array) and r queries given some start and end. For each query we have to add the values ​​n from the beginning to the end of the limit in the array.

Example

Input:
arr[] = {1, 2, 3, 4, 5}
query[] = { { 0, 3 }, { 1, 2 } }
n = 2
Output:
If we run above program then it will generate following output:
Query1: { 3, 4, 5, 6, 5 }
Query2: { 3, 6, 7, 6, 5 }

This program can be solved in a simple way, where-

• We will iterate over all the queries, starting from the starting point of the query and traversing the array , until the end point stored in the query.
• Add the value of n and print the array.

Algorithm

START
STEP 1 : DECLARE A STRUCT range for start AND end LIMITS
STEP 2 : IN FUNCTION add_tomatrix(int arr[], struct range r[], int n, int size, int m)
   int i, j, k;
   LOOP FOR i = 0 AND i < m AND i++
      LOOP FOR j = r[i].start AND j<= r[i].end AND j++
         arr[j] = arr[j] + n
      END FOR
      LOOP FOR k = 0 AND k < size AND k++
         PRINT arr[k]
      END FOR
   END FOR
STOP

Example

#include <stdio.h>
struct range{
   int start, end; //struct to give the range for the array elements
};
int add_tomatrix(int arr[], struct range r[], int n, int size, int m){
   int i, j, k;
   for ( i = 0; i < m; i++) //for all the elements in a struct we defined{
      for(j = r[i].start; j<= r[i].end; j++) //from where till where we want our results to be updated{
         arr[j] += n; //add the value of the particular range
      }
      printf("Query %d:", i+1);
      for ( k = 0; k < size; k++){
         printf(" %d",arr[k]); // print the whole array after every query
      }
      printf("</p><p>");
   }
}
int main(int argc, char const *argv[]){
   int arr[] ={3, 4, 8, 1, 10};
   struct range r[] = {{0,2}, {1, 3}, {3, 4}};
   int n = 2;
   int size = sizeof(arr)/sizeof(arr[0]);
   int m = sizeof(r)/sizeof(r[0]);
   add_tomatrix(arr, r, n, size, m);
   return 0;
}

Output

If we run the above program then it will generate the following output-

Query 1: 5 6 10 1 10
Query 2: 5 8 12 3 10
Query 3: 5 8 12 5 12

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